如何截获执行命令行的输出

Option Explicit
Private Declare Function CreatePipe Lib "kernel32" (phReadPipe As Long, phWritePipe As Long, lpPipeAttributes As SECURITY_ATTRIBUTES, ByVal nSize As Long) As Long
Private Declare Function ReadFile Lib "kernel32" (ByVal hFile As Long, ByVal lpBuffer As String, ByVal nNumberOfBytesToRead As Long, lpNumberOfBytesRead As Long, ByVal lpOverlapped As Any) As Long
Private Type SECURITY_ATTRIBUTES
 nLength As Long
 lpSecurityDescriptor As Long
 bInheritHandle As Long
End Type
Private Type STARTUPINFO
 cb As Long
 lpReserved As String
 lpDesktop As String
 lpTitle As String
 dwX As Long
 dwY As Long
 dwXSize As Long
 dwYSize As Long
 dwXCountChars As Long
 dwYCountChars As Long
 dwFillAttribute As Long
 dwFlags As Long
 wShowWindow As Integer
 cbReserved2 As Integer
 lpReserved2 As Long
 hStdInput As Long
 hStdOutput As Long
 hStdError As Long
End Type
Private Type PROCESS_INFORMATION
 hProcess As Long
 hThread As Long
 dwProcessId As Long
 dwThreadId As Long
End Type
Private Declare Function CreateProcessAsUser Lib "advapi32.dll" Alias "CreateProcessAsUserA" (ByVal hToken As Long, ByVal lpApplicationName As String, ByVal lpCommandLine As String, ByVal lpProcessAttributes As SECURITY_ATTRIBUTES, ByVal lpThreadAttributes As SECURITY_ATTRIBUTES, ByVal bInheritHandles As Long, ByVal dwCreationFlags As Long, ByVal lpEnvironment As String, ByVal lpCurrentDirectory As String, ByVal lpStartupInfo As STARTUPINFO, ByVal lpProcessInformation As PROCESS_INFORMATION) As Long
Private Declare Function CreateProcessA Lib "kernel32" (ByVal lpApplicationName As Long, ByVal lpCommandLine As String, lpProcessAttributes As SECURITY_ATTRIBUTES, lpThreadAttributes As SECURITY_ATTRIBUTES, ByVal bInheritHandles As Long, ByVal dwCreationFlags As Long, ByVal lpEnvironment As Long, ByVal lpCurrentDirectory As Long, lpStartupInfo As STARTUPINFO, lpProcessInformation As PROCESS_INFORMATION) As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Private Const NORMAL_PRIORITY_CLASS = &H20
Private Const STARTF_USESTDHANDLES = &H100
Private Const STARTF_USESHOWWINDOW = &H1
Private Function ExecuteCommandLineOutput(CommandLine As String, Optional BufferSize As Long = 256, Optional TimeOut As Long) As String
 Dim Proc As PROCESS_INFORMATION
 Dim Start As STARTUPINFO
 Dim SA As SECURITY_ATTRIBUTES
 Dim hReadPipe As Long
 Dim hWritePipe As Long
 Dim lBytesRead As Long
 Dim sBuffer As String
 If VBA.Len(CommandLine) > 0 Then
  SA.nLength = Len(SA)
  'SA.nLength = vba.Len(sa)
  SA.bInheritHandle = 1&
  SA.lpSecurityDescriptor = 0&
  If CreatePipe(hReadPipe, hWritePipe, SA, 0) > 0 Then
   Start.cb = Len(Start)
   Start.dwFlags = STARTF_USESTDHANDLES Or STARTF_USESHOWWINDOW
   Start.hStdOutput = hWritePipe
   Start.hStdError = hWritePipe
   If CreateProcessA(0&, CommandLine, SA, SA, 1&, NORMAL_PRIORITY_CLASS, 0&, 0&, Start, Proc) = 1 Then
    CloseHandle hWritePipe
    sBuffer = VBA.String(BufferSize, VBA.Chr(0))
    If TimeOut > 0 Then
     Dim BeginTime As Date
     BeginTime = VBA.Now
    End If
    Do Until ReadFile(hReadPipe, sBuffer, BufferSize, lBytesRead, 0&) = 0
     DoEvents
     If TimeOut > 0 Then
      If VBA.DateDiff("s", BeginTime, VBA.Now) > TimeOut Then
       ExecuteCommandLineOutput = "Timeout"
       Exit Do
      End If
     End If
     ExecuteCommandLineOutput = ExecuteCommandLineOutput & VBA.Left(sBuffer, lBytesRead)
    Loop
    CloseHandle Proc.hProcess
    CloseHandle Proc.hThread
    CloseHandle hReadPipe
   Else
    ExecuteCommandLineOutput = "File or command not found"
   End If
  Else
   ExecuteCommandLineOutput = "CreatePipe failed. Error: " & Err.LastDllError & "."
  End If
 End If
End Function
Private Sub Command1_Click() '测试
 'VBA.MsgBox ExecuteCommandLineOutput("ping www.sina.com.cn")
 VBA.MsgBox ExecuteCommandLineOutput("ping www.xxxx.com.cn", , 2)
End Sub